[Adaptation] Move VideoStreamAdapter to call/adaptation/.

This CL is part of the Call-Level Adaptation Processing design doc:
https://docs.google.com/document/d/1ZyC26yOCknrrcYa839ZWLxD6o6Gig5A3lVTh4E41074/edit?usp=sharing

This is a pure move CL. In the future, the Processor will live in
call/adaptation/. This prevents circular dependencies.

Bug: webrtc:11172
Change-Id: Ib72503cc20e27ab6425538e3d55930c65e0b4a90
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/172931
Commit-Queue: Henrik Boström <hbos@webrtc.org>
Reviewed-by: Ilya Nikolaevskiy <ilnik@webrtc.org>
Reviewed-by: Evan Shrubsole <eshr@google.com>
Cr-Commit-Position: refs/heads/master@{#31100}

call/adaptation/BUILD.gn

@@ -18,6 +18,8 @@ rtc_library("resource_adaptation") {
     "resource_adaptation_processor_interface.h",
     "video_source_restrictions.cc",
     "video_source_restrictions.h",
+    "video_stream_adapter.cc",
+    "video_stream_adapter.h",
     "video_stream_input_state.cc",
     "video_stream_input_state.h",
     "video_stream_input_state_provider.cc",
@@ -25,11 +27,14 @@ rtc_library("resource_adaptation") {
   ]
   deps = [
     "../../api:rtp_parameters",
+    "../../api/video:video_adaptation",
     "../../api/video:video_frame",
     "../../api/video:video_stream_encoder",
     "../../api/video_codecs:video_codecs_api",
+    "../../modules/video_coding:video_coding_utility",
     "../../rtc_base:checks",
     "../../rtc_base:rtc_base_approved",
+    "../../rtc_base/experiments:balanced_degradation_settings",
     "//third_party/abseil-cpp/absl/algorithm:container",
     "//third_party/abseil-cpp/absl/types:optional",
   ]
@@ -39,12 +44,19 @@ if (rtc_include_tests) {
   rtc_library("resource_adaptation_tests") {
     testonly = true
 
-    sources = [ "resource_unittest.cc" ]
+    sources = [
+      "resource_unittest.cc",
+      "video_stream_adapter_unittest.cc",
+    ]
     deps = [
       ":resource_adaptation",
       ":resource_adaptation_test_utilities",
+      "../../api/video:video_adaptation",
+      "../../api/video_codecs:video_codecs_api",
       "../../rtc_base:checks",
       "../../rtc_base:rtc_base_approved",
+      "../../test:field_trial",
+      "../../test:rtc_expect_death",
       "../../test:test_support",
       "//third_party/abseil-cpp/absl/types:optional",
     ]

call/adaptation/video_stream_adapter.cc

@@ -8,7 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "video/adaptation/video_stream_adapter.h"
+#include "call/adaptation/video_stream_adapter.h"
 
 #include <algorithm>
 #include <limits>

call/adaptation/video_stream_adapter.h

@@ -8,8 +8,8 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#ifndef VIDEO_ADAPTATION_VIDEO_STREAM_ADAPTER_H_
-#define VIDEO_ADAPTATION_VIDEO_STREAM_ADAPTER_H_
+#ifndef CALL_ADAPTATION_VIDEO_STREAM_ADAPTER_H_
+#define CALL_ADAPTATION_VIDEO_STREAM_ADAPTER_H_
 
 #include <memory>
 
@@ -191,4 +191,4 @@ class VideoStreamAdapter {
 
 }  // namespace webrtc
 
-#endif  // VIDEO_ADAPTATION_VIDEO_STREAM_ADAPTER_H_
+#endif  // CALL_ADAPTATION_VIDEO_STREAM_ADAPTER_H_

call/adaptation/video_stream_adapter_unittest.cc

@@ -8,7 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "video/adaptation/video_stream_adapter.h"
+#include "call/adaptation/video_stream_adapter.h"
 
 #include <string>
 #include <utility>

video/adaptation/BUILD.gn

@@ -18,8 +18,6 @@ rtc_library("video_adaptation") {
     "quality_scaler_resource.h",
     "resource_adaptation_processor.cc",
     "resource_adaptation_processor.h",
-    "video_stream_adapter.cc",
-    "video_stream_adapter.h",
   ]
 
   deps = [
@@ -60,7 +58,6 @@ if (rtc_include_tests) {
     sources = [
       "overuse_frame_detector_unittest.cc",
       "resource_adaptation_processor_unittest.cc",
-      "video_stream_adapter_unittest.cc",
     ]
     deps = [
       ":video_adaptation",

video/adaptation/resource_adaptation_processor.h

@@ -30,6 +30,7 @@
 #include "api/video_codecs/video_encoder_config.h"
 #include "call/adaptation/resource.h"
 #include "call/adaptation/resource_adaptation_processor_interface.h"
+#include "call/adaptation/video_stream_adapter.h"
 #include "call/adaptation/video_stream_input_state_provider.h"
 #include "rtc_base/experiments/quality_rampup_experiment.h"
 #include "rtc_base/experiments/quality_scaler_settings.h"
@@ -38,7 +39,6 @@
 #include "video/adaptation/encode_usage_resource.h"
 #include "video/adaptation/overuse_frame_detector.h"
 #include "video/adaptation/quality_scaler_resource.h"
-#include "video/adaptation/video_stream_adapter.h"
 
 namespace webrtc {